Replaced M_PI with a local constant kPi since M_PI is not defined by ISO C/C++.
Replaced M_PI with a local constant kPi since M_PI is not defined by ISO C/C++.

windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla